JP2002148094A - Method and equipment for measuring water level - Google Patents
Method and equipment for measuring water levelInfo
- Publication number
- JP2002148094A JP2002148094A JP2000344247A JP2000344247A JP2002148094A JP 2002148094 A JP2002148094 A JP 2002148094A JP 2000344247 A JP2000344247 A JP 2000344247A JP 2000344247 A JP2000344247 A JP 2000344247A JP 2002148094 A JP2002148094 A JP 2002148094A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- image processing
- battery
- image
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はダム、河川などにお
ける水位を画像処理によって計測する水位計測方法およ
び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring a water level in a dam, a river or the like by image processing.
【０００２】[0002]
【従来の技術】一般に、ダム、河川などの水位（潮位）
の測定は、水位測定個所に目盛りを付けた量水標（量水
板とも称する）を設け、人間が目視で読取ることにより
行っている。2. Description of the Related Art Generally, water levels (tidal levels) of dams, rivers, etc.
Is measured by providing a water mark (also referred to as a water plate) with a scale at a water level measurement point and reading it visually by a human.
【０００３】また、機械的に水位計測するには水面にフ
ロートを浮べてフロートの変位を機械的に測定するもの
が知られている。In order to measure the water level mechanically, there is known a method in which a float is floated on a water surface and the displacement of the float is measured mechanically.
【０００４】しかし、目視による水位測定は遠隔地の測
定が困難であり、また、機械的な測定はフロートなどの
故障のため信頼性に欠けるという問題点を有する。However, it is difficult to measure the water level by visual observation at a remote place, and mechanical measurement has a problem that reliability is lacking due to a failure such as a float.
【０００５】このような問題点を解決するため量水標を
カメラなどの撮像装置で撮像した画像を画像処理して水
位計測することが提案され、既に実用に供されている。
このことは、例えば特開平７―３３０３９号公報、特開
平８―１４５７６５号公報などに記載されている。[0005] In order to solve such problems, it has been proposed to perform image processing of an image of a water mark captured by an imaging device such as a camera to measure a water level, and it has already been put to practical use.
This is described in, for example, JP-A-7-33039 and JP-A-8-145765.
【０００６】このように、量水標を撮像した画像を画像
処理して水位計測する水位計測装置には、量水標を撮像
するカメラなどの撮像装置と、撮像装置で撮像した画像
を画像処理して水位計測する画像処理装置および画像処
理装置で計測した水位計測値を監視所に送信する通信装
置とが必要となる。[0006] As described above, a water level measuring device that performs image processing of an image of a water mark to measure a water level includes an image capturing device such as a camera that captures an image of the water mark, and an image processing device that processes an image captured by the image capturing device. An image processing device for measuring the water level and a communication device for transmitting the measured water level measured by the image processing device to the monitoring station are required.
【０００７】水位計測装置を構成する撮像装置、画像処
理装置および通信装置を動作させるには電源が必要とな
る。画像処理して水位計測する水位計測装置の電源は１
２Ｖ程度である。従来、画像処理して水位計測する水位
計測装置の電源は商用電源の電圧を降圧して得るように
している。A power supply is required to operate the imaging device, image processing device, and communication device that constitute the water level measuring device. The power of the water level measuring device that measures the water level by image processing is 1
It is about 2V. 2. Description of the Related Art Conventionally, a power source of a water level measuring apparatus for measuring a water level by performing image processing is obtained by stepping down a voltage of a commercial power source.
【０００８】ところで、画像処理して水位計測する水位
計測装置を商用電源を得られない僻地に設置することが
要求されている。その場合には電源としてバッテリー
（蓄電池）を用い、このバッテリーを太陽電池で充電す
る構成にすることが考えられている。By the way, it is required to install a water level measuring device for measuring a water level by image processing in a remote place where commercial power cannot be obtained. In such a case, a battery (storage battery) is used as a power source, and the battery is charged with a solar cell.
【０００９】[0009]
【発明が解決しようとする課題】水位計測装置の電源と
して太陽電池で充電されるバッテリー（蓄電池）を用い
た場合、長期間の天候不順によってバッテリーを太陽電
池で充電することができなくなる。バッテリーを太陽電
池で充電できないとバッテリー電圧が低下して、水位計
測装置を作動できず水位計測不能になるという問題点を
有する。When a battery (rechargeable battery) charged by a solar cell is used as a power source of the water level measuring device, the battery cannot be charged by the solar cell due to long-term irregular weather. If the battery cannot be charged by the solar cell, the battery voltage decreases, and the water level measurement device cannot be operated, and the water level cannot be measured.
【００１０】このため、天候不順によってバッテリーを
太陽電池で充電することができなくても水位計測を継続
して行えるようにすることが強く要望されている。[0010] Therefore, there is a strong demand that the water level can be continuously measured even if the battery cannot be charged by the solar cell due to irregular weather.
【００１１】本発明は上記点に対処して成されたもの
で、その目的とするところはバッテリーを太陽電池で充
電できなくて画像処理による水位計測を継続してできる
水位計測方法および装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a water level measurement method and apparatus capable of continuously measuring a water level by image processing without charging a battery with a solar cell. Is to do.
【００１２】[0012]
【課題を解決するための手段】本発明の特徴とするとこ
ろは、太陽電池により充電されるバッテリーの電圧が設
定値より小さいときには水位計測周期を大きくするよう
にしたことにある。A feature of the present invention is that the water level measurement cycle is increased when the voltage of a battery charged by a solar cell is smaller than a set value.
【００１３】具体的には、バッテリーの電圧が設定値よ
り小さいときには水位計測装置に給電する周期を大きく
する。Specifically, when the voltage of the battery is smaller than the set value, the period for supplying power to the water level measuring device is increased.
【００１４】本発明はバッテリーの電圧が設定値より小
さいときには水位計測周期を大きくして水位を計測する
ので、バッテリーの電力消耗を低減して水位計測を継続
して行えるようになる。天候が回復すればバッテリーは
太陽電池により充電されることになる。According to the present invention, when the voltage of the battery is smaller than the set value, the water level is measured by increasing the water level measurement period, so that the power consumption of the battery can be reduced and the water level can be measured continuously. When the weather recovers, the battery will be charged by solar cells.
【００１５】[0015]
【発明の実施の形態】図１に本発明の一実施例を示す。FIG. 1 shows an embodiment of the present invention.
【００１６】図１において、水位測定個所に目盛りを付
され水面に対して垂直状に設置されている量水標１はカ
メラ２によって撮像される。量水標１の近傍には水位判
定が正確に行えるように、通常、例えば特開平１１―７
２３７０号公報に記載されているような図示しない傾斜
板が配置される。In FIG. 1, a water mark 1, which is graduated at a measuring point of water level and is installed vertically to the water surface, is imaged by a camera 2. In order to accurately determine the water level in the vicinity of the water mark 1, for example, Japanese Patent Application Laid-Open No.
An unillustrated inclined plate as described in Japanese Patent No. 2370 is arranged.
【００１７】カメラ２は量水標１の水面境界部２０を撮
影できる位置に設置される。カメラ２と量水標１までの
距離は１００ｍ程度である。カメラ２は１シーン（１撮
影画面）で計測範囲全体をカバーするのが理想的である
が、通常はカメラ２の解像度と計測要求精度から１シー
ンが４m程度であり、複数枚のカメラシーンで全計測範
囲をカバーする。このため、カメラ２は予めプリセット
シーンを設定しておき水面位置により決められたプリセ
ットシーンに合わせるようにし、水面位置に合わせてカ
メラ角度（撮影角度）を制御される。The camera 2 is installed at a position where the water surface boundary 20 of the water mark 1 can be photographed. The distance between the camera 2 and the water mark 1 is about 100 m. Ideally, the camera 2 covers the entire measurement range with one scene (one shooting screen). However, usually, one scene is about 4 m from the resolution of the camera 2 and the required measurement accuracy. Covers the entire measurement range. For this reason, the camera 2 sets a preset scene in advance so as to match the preset scene determined by the water surface position, and the camera angle (shooting angle) is controlled according to the water surface position.
【００１８】カメラ２で撮影された量水標１および水面
境界部２０を含む画像（量水標画像）は画像処理装置３
に取込まれる。画像処理装置３は、量水標１の水面境界
部２０を解析して水面位置を特定して量水標１の基準目
盛を使用して水位を計算する。画像処理装置３の計測結
果である水位計測値は、通信装置（無線通信装置）４に
加えられ、監視所に送信される。An image (water mark image) including the water mark 1 and the water surface boundary 20 taken by the camera 2 is processed by the image processing device 3.
Is taken in. The image processing device 3 analyzes the water surface boundary portion 20 of the water mark 1 to specify the water surface position, and calculates the water level using the reference scale of the water mark 1. The water level measurement value as the measurement result of the image processing device 3 is added to the communication device (wireless communication device) 4 and transmitted to the monitoring station.
【００１９】カメラ２、画像処理装置３、通信装置４は
電源回路（開閉器）５を介してバッテリー６から給電さ
れる。バッテリー６の定格電圧は１２Ｖである。バッテ
リー６は太陽電池７によって充電される。The camera 2, the image processing device 3, and the communication device 4 are supplied with power from a battery 6 via a power supply circuit (switch) 5. The rated voltage of the battery 6 is 12V. Battery 6 is charged by solar cell 7.
【００２０】バッテリー６の電圧Ｖｏは電圧検出回路８
され、設定値Ｖｓと比較される。設定値Ｖｓは例えば１
１Ｖに設定される。電圧検出回路８はＶｓ＞Ｖｏになる
と計測周期制御回路９に周期変更指令を与える。計測周
期制御回路９は周期変更指令を入力すると電源回路５の
開閉器をオンオフする周期を変更する。The voltage Vo of the battery 6 is detected by a voltage detection circuit 8
And compared with the set value Vs. The set value Vs is, for example, 1
It is set to 1V. When Vs> Vo, the voltage detection circuit 8 gives a cycle change command to the measurement cycle control circuit 9. The measurement cycle control circuit 9 changes the cycle of turning on and off the switch of the power supply circuit 5 when the cycle change command is input.
【００２１】なお、画像処理装置３は、中央処理装置
（ＣＰＵ）、主メモリ、バス、画像専用プロセッサ、画
像メモリ、外部インターフェースなどから構成されてい
る。The image processing device 3 comprises a central processing unit (CPU), a main memory, a bus, a dedicated image processor, an image memory, an external interface, and the like.
【００２２】次に動作を説明する。Next, the operation will be described.
【００２３】バッテリー６の電圧Ｖｏが設定値Ｖｓより
大きい場合、計測周期制御回路９は予め定められた周期
で開閉器５をオンにする。通常、この周期は１０分程で
ある。開閉器５をオンにすると、カメラ２、画像処理装
置３、通信装置４はバッテリー６から給電され作動を開
始する。When the voltage Vo of the battery 6 is higher than the set value Vs, the measurement cycle control circuit 9 turns on the switch 5 at a predetermined cycle. Usually, this period is about 10 minutes. When the switch 5 is turned on, the camera 2, the image processing device 3, and the communication device 4 are powered by the battery 6 and start operating.
【００２４】カメラ２で撮影された量水標１および水面
境界部２０を含む画像（量水標画像）は画像処理装置３
に取込まれる。画像処理装置３は、量水標１の水面境界
部２０を解析して水面位置を特定して量水標１の基準目
盛を使用して水位を計算する。An image (water mark image) including the water mark 1 and the water surface boundary 20 taken by the camera 2 is processed by the image processing device 3.
Is taken in. The image processing device 3 analyzes the water surface boundary portion 20 of the water mark 1 to specify the water surface position, and calculates the water level using the reference scale of the water mark 1.
【００２５】画像処理装置３の水位計測は概略次のよう
にして行われる。水位計測プログラムは主メモリに格納
されており、ＣＰＵはこのプログラムに従い水位計測処
理を実行する。画像専用プロセッサは、画像処理機能を
高速に実行するために処理アルゴリズムをＬＳＩ、ハー
ドウエア化されており、カメラ２からの画像や画像専用
プロセッサの画像処理結果は画像メモリに格納される。The water level measurement of the image processing device 3 is performed as follows. The water level measurement program is stored in the main memory, and the CPU executes a water level measurement process according to the program. The image dedicated processor has a processing algorithm implemented as an LSI or hardware to execute the image processing function at high speed, and the image from the camera 2 and the image processing result of the image dedicated processor are stored in the image memory.
【００２６】このような画像処理装置３の水位計測処理
は、１回の測定周期で複数回行われ、平均をとることに
よってさざなみをしている。The water level measurement processing of the image processing apparatus 3 is performed a plurality of times in one measurement cycle, and the average is taken to create a ripple.
【００２７】このようにして画像処理装置３で計測され
た水位計測値は、通信装置（無線通信装置）４に加えら
れ、監視所に送信される。計測周期制御回路９は１周期
の測定が終了すると開閉器５をオフする。開閉器５をオ
ンしている時間は２分程度である。この状態において、
バッテリー６は太陽電池７により充電されている。The measured water level measured by the image processing device 3 in this manner is applied to a communication device (wireless communication device) 4 and transmitted to a monitoring station. The measurement cycle control circuit 9 turns off the switch 5 when one cycle of measurement is completed. The time during which the switch 5 is turned on is about 2 minutes. In this state,
Battery 6 is charged by solar cell 7.
【００２８】このように水位計測を行っているときに、
天候不順によって太陽電池７からバッテリー６の充電が
充分になされず電圧Ｖｏが設定値Ｖｓより小さくなった
とする。電圧検出回路８はＶｏ＜Ｖｓになると計測周期
制御回路９に周期変更指令を与える。計測周期制御回路
９は周期変更指令を入力すると電源回路５の開閉器をオ
ンする周期を大きくなるように変更する。計測周期制御
回路９は、例えば、６０分にする。As described above, when the water level is measured,
It is assumed that the solar cell 7 does not sufficiently charge the battery 6 due to irregular weather, and the voltage Vo becomes smaller than the set value Vs. When Vo <Vs, the voltage detection circuit 8 gives a cycle change command to the measurement cycle control circuit 9. Upon input of the cycle change command, the measurement cycle control circuit 9 changes the cycle of turning on the switch of the power supply circuit 5 to be longer. The measurement cycle control circuit 9 sets, for example, 60 minutes.
【００２９】バッテリー６の電圧Ｖｏが設定値Ｖｓより
小さくなると６０分の計測周期で開閉器５がオンされ、
画像処理装置３で同様に水位計測が行われる。カメラ
２、画像処理装置３、通信装置４はバッテリー６から給
電される電圧が例えば９Ｖ以上であれば作動する。When the voltage Vo of the battery 6 becomes smaller than the set value Vs, the switch 5 is turned on at a measurement cycle of 60 minutes,
The water level measurement is similarly performed in the image processing device 3. The camera 2, the image processing device 3, and the communication device 4 operate when the voltage supplied from the battery 6 is, for example, 9 V or more.
【００３０】その後、天候が回復し太陽電池７からバッ
テリー６の充電がされ電圧Ｖｏが設定値Ｖｓより大きく
なると、計測周期制御回路９は電源回路５の開閉器をオ
ンする周期を通常の周期に戻し小さくする。Thereafter, when the weather recovers and the battery 6 is charged from the solar cell 7 and the voltage Vo becomes larger than the set value Vs, the measurement cycle control circuit 9 sets the cycle of turning on the switch of the power supply circuit 5 to a normal cycle. Return to smaller.
【００３１】以上のようにして水位計測を行うのである
が、バッテリーの電圧が設定値より小さいときには水位
計測周期を大きくして水位を計測するので、バッテリー
の電力消耗を低減して水位計測を継続して行える。その
後、天候が回復すればバッテリーは太陽電池により充電
されるので水位計測を継続できる。The water level is measured as described above. When the battery voltage is smaller than the set value, the water level is measured by increasing the water level measurement cycle, so that the power consumption of the battery is reduced and the water level measurement is continued. You can do it. Thereafter, when the weather recovers, the battery is charged by the solar cell, so that the water level measurement can be continued.
【００３２】なお、上述の実施例はカメラなどの撮像手
段、画像処理手段および通信手段を電源のオンオフで作
動、停止させるようにしているが、各手段を直接オンオ
フするようにしてもよいことは明らかなことである。In the above embodiment, the image pickup means such as a camera, the image processing means, and the communication means are activated and deactivated by turning on / off the power supply. However, it is also possible to directly turn on / off each means. It is clear.
【００３３】また、水位計測周期を２つに変更している
が、バッテリー電圧に応じて複数の周期に変更してもよ
いことは勿論のことである。Although the water level measurement cycle is changed to two, it goes without saying that the water level measurement cycle may be changed to a plurality of cycles according to the battery voltage.
【００３４】[0034]
【発明の効果】本発明によればバッテリーの電圧が設定
値より小さいときには水位計測周期を大きくして水位を
計測するので、バッテリーの電力消耗を低減して水位計
測を継続して行えるようになる。その後、天候が回復す
ればバッテリーは太陽電池により充電されるので水位計
測を継続できる。According to the present invention, when the battery voltage is smaller than the set value, the water level is measured by increasing the water level measurement cycle, so that the power consumption of the battery can be reduced and the water level measurement can be continued. . Thereafter, when the weather recovers, the battery is charged by the solar cell, so that the water level measurement can be continued.
【図１】本発明の一実施例を示す構成図である。FIG. 1 is a configuration diagram showing one embodiment of the present invention.
１…量水標、２…カメラ、３…画像処理装置、４…通信
装置、５…電源回路（開閉器）、６…バッテリー、７…
太陽電池、８…電圧検出回路、９…計測周期制御回路。DESCRIPTION OF SYMBOLS 1 ... Water mark, 2 ... Camera, 3 ... Image processing device, 4 ... Communication device, 5 ... Power supply circuit (switch), 6 ... Battery, 7 ...
Solar cell, 8: voltage detection circuit, 9: measurement cycle control circuit.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高木 陽市 茨城県日立市大みか町五丁目２番１号 日 立プロセスコンピュータエンジニアリング 株式会社内 (72)発明者 辻川 秋雄 茨城県日立市大みか町五丁目２番１号 株 式会社日立製作所情報制御システム事業部 内 (72)発明者 海老沢 匠 茨城県日立市大みか町五丁目２番１号 日 立プロセスコンピュータエンジニアリング 株式会社内 Ｆターム(参考） 2F014 FA04 GA10 5F051 BA05 BA11 JA17 JA20 KA03 KA10 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoichi Takagi 5-2-1 Omikacho, Hitachi City, Ibaraki Prefecture Inside Hitachi Process Computer Engineering Co., Ltd. (72) Inventor Akio Tsujikawa 5-chome Omikamachi, Hitachi City, Ibaraki Prefecture No. 1 Hitachi, Ltd. Information Control Systems Division (72) Inventor Takumi Ebisawa 5-2-1 Omika-cho, Hitachi City, Ibaraki Prefecture F-term (reference) 2F014 FA04 GA10 5F051 BA05 BA11 JA17 JA20 KA03 KA10
Claims (5)
し、この撮像手段で撮影した画像を画像処理手段により
画像処理して水位を計測し通信手段で通信するものであ
って、太陽電池により充電され、前記撮像手段、画像処
理手段および通信手段に給電するバッテリーの電圧が設
定値より小さいときには水位計測周期を大きくするよう
にしたことを特徴とする水位計測方法。1. A water mark indicating a water surface position is photographed by an image pickup means, and an image photographed by the image pickup means is subjected to image processing by an image processing means to measure a water level and is communicated by a communication means. A water level measurement method, characterized in that a water level measurement cycle is increased when a voltage of a battery charged by a battery and supplied to the imaging means, the image processing means and the communication means is smaller than a set value.
し、この撮像手段で撮影した画像を画像処理手段により
画像処理して水位を計測し通信手段で通信するものであ
って、太陽電池により充電され、前記撮像手段、画像処
理手段および通信手段に給電するバッテリーの電圧が設
定値より小さいときには前記撮像手段、画像処理手段お
よび通信手段に給電して水位を計測する水位計測周期を
大きくするようにしたことを特徴とする水位計測方法。2. A water mark indicating a water surface position is photographed by an image pickup means, and an image taken by the image pickup means is subjected to image processing by an image processing means to measure a water level and communicate by a communication means. When the voltage of the battery that is charged by the battery and supplies power to the imaging unit, the image processing unit, and the communication unit is smaller than a set value, the water level measurement cycle for supplying power to the imaging unit, the image processing unit, and the communication unit to measure the water level is increased. A water level measurement method characterized in that the water level is measured.
と、前記撮像手段で撮像した画像を画像処理して水位を
計測する画像処理手段と、前記画像処理手段で計測した
水位計測値を送信する通信手段と、太陽電池により充電
され、前記撮像手段、画像処理手段および通信手段に給
電するバッテリーと、前記バッテリーの電圧が設定値よ
り小さいときには水位計測周期を大きくする計測周期制
御手段とを具備することを特徴とする水位計測装置。3. An image pickup means for picking up a water mark indicating a water surface position, an image processing means for processing an image picked up by the image pickup means to measure a water level, and a water level measurement value measured by the image processing means. A communication means for transmitting a signal, a battery charged by a solar cell and supplying power to the imaging means, the image processing means and the communication means, and a measurement cycle control means for increasing a water level measurement cycle when the voltage of the battery is smaller than a set value. A water level measuring device comprising:
と、前記撮像手段で撮像した画像を画像処理して水位を
計測する画像処理手段と、前記画像処理手段で計測した
水位計測値を送信する通信手段と、太陽電池により充電
され、前記撮像手段、画像処理手段および通信手段に給
電するバッテリーと、前記バッテリーの電圧が設定値よ
り小さいときには前記撮像手段、画像処理手段および通
信手段に給電して水位を計測する水位計測周期を大きく
する計測周期制御手段とを具備することを特徴とする水
位計測装置。4. An image pickup means for picking up a water mark indicating a water surface position, an image processing means for processing an image picked up by the image pickup means to measure a water level, and a water level measurement value measured by the image processing means. And a battery that is charged by a solar cell and supplies power to the imaging unit, the image processing unit, and the communication unit. When the voltage of the battery is smaller than a set value, the imaging unit, the image processing unit, and the communication unit A water level measurement device comprising: a measurement cycle control unit that increases a water level measurement cycle for measuring a water level by supplying power.
と、前記カメラで撮像した量水標画像を画像処理して水
位を計測する画像処理手段と、前記画像処理手段で計測
した水位計測値を送信する無線通信手段と、太陽電池に
より充電されるバッテリーと、前記バッテリーから前記
撮像手段、画像処理手段および通信手段に給電する開閉
手段と、前記バッテリーの電圧が設定値より小さいとき
には前記開閉手段をオンする水位計測周期を大きくする
計測周期制御手段とを具備することを特徴とする水位計
測装置。5. A camera for picking up a water mark indicating a water surface position, image processing means for image-processing a water mark image picked up by said camera to measure a water level, and water level measurement measured by said image processing means. Wireless communication means for transmitting a value, a battery charged by a solar cell, opening and closing means for supplying power to the imaging means, image processing means and communication means from the battery, and opening and closing when the voltage of the battery is smaller than a set value. A measuring cycle control means for increasing a water level measuring cycle for turning on the means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000344247A JP2002148094A (en) | 2000-11-10 | 2000-11-10 | Method and equipment for measuring water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000344247A JP2002148094A (en) | 2000-11-10 | 2000-11-10 | Method and equipment for measuring water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002148094A true JP2002148094A (en) | 2002-05-22 |
Family
ID=18818475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000344247A Pending JP2002148094A (en) | 2000-11-10 | 2000-11-10 | Method and equipment for measuring water level |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002148094A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100723652B1 (en) * | 2005-09-26 | 2007-05-30 | 양준묵 | Battery save circuit of water level sensing device |
| JP2007226681A (en) * | 2006-02-24 | 2007-09-06 | Nagaoka Univ Of Technology | Water flow area detection system, water flow area detection method, and program |
| JP2008527493A (en) * | 2005-01-03 | 2008-07-24 | ローズマウント インコーポレイテッド | Wireless process field device diagnostics |
| WO2010024452A1 (en) * | 2008-08-28 | 2010-03-04 | 日清紡ホールディングス株式会社 | Apparatus for inspecting solar battery |
| JP2010239517A (en) * | 2009-03-31 | 2010-10-21 | Yamatake Corp | Wireless sensor |
| CN104655233A (en) * | 2015-03-08 | 2015-05-27 | 无锡桑尼安科技有限公司 | Automatic detection method for water level |
-
2000
- 2000-11-10 JP JP2000344247A patent/JP2002148094A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008527493A (en) * | 2005-01-03 | 2008-07-24 | ローズマウント インコーポレイテッド | Wireless process field device diagnostics |
| KR100723652B1 (en) * | 2005-09-26 | 2007-05-30 | 양준묵 | Battery save circuit of water level sensing device |
| JP2007226681A (en) * | 2006-02-24 | 2007-09-06 | Nagaoka Univ Of Technology | Water flow area detection system, water flow area detection method, and program |
| JP4677561B2 (en) * | 2006-02-24 | 2011-04-27 | 国立大学法人長岡技術科学大学 | Water level detection system, water level detection method, and program |
| WO2010024452A1 (en) * | 2008-08-28 | 2010-03-04 | 日清紡ホールディングス株式会社 | Apparatus for inspecting solar battery |
| JP2010056252A (en) * | 2008-08-28 | 2010-03-11 | Nisshinbo Holdings Inc | Tester for solar cell |
| US8604819B2 (en) | 2008-08-28 | 2013-12-10 | Nisshinbo Holdings Inc. | Inspecting apparatus for photovoltaic devices |
| JP2010239517A (en) * | 2009-03-31 | 2010-10-21 | Yamatake Corp | Wireless sensor |
| CN104655233A (en) * | 2015-03-08 | 2015-05-27 | 无锡桑尼安科技有限公司 | Automatic detection method for water level |
| CN105043497A (en) * | 2015-03-08 | 2015-11-11 | 无锡桑尼安科技有限公司 | Water level automatic detection method |
| CN104655233B (en) * | 2015-03-08 | 2017-07-11 | 周俊彤 | A kind of water level automatic checkout equipment |
| CN105043497B (en) * | 2015-03-08 | 2017-09-15 | 泰州国安医疗用品有限公司 | A kind of water level automatic checkout equipment |
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